document.write( "Question 765446: the average mark obtained by the student of examination is p. the ratio of boy to girls in the class is 5:1. if the average score of boys is p+1 then find average score of the girls
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Algebra.Com's Answer #466230 by ramkikk66(644)\"\" \"About 
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Ratio of boys to girls = 5:1\r
\n" ); document.write( "\n" ); document.write( "Assume that the number of girls is x\r
\n" ); document.write( "\n" ); document.write( "If there are x girls in the class there are 5*x boys \r
\n" ); document.write( "\n" ); document.write( "Total number of students = 6*x\r
\n" ); document.write( "\n" ); document.write( "Average score for the whole class of 6*x students = p.\r
\n" ); document.write( "\n" ); document.write( "So total marks scored by the class = \"6%2Ax%2Ap\"
\n" ); document.write( "(Remember that average for all students = total / number of students)\r
\n" ); document.write( "\n" ); document.write( "Similarly, Average score of boys = p+1\r
\n" ); document.write( "\n" ); document.write( "So total marks scored by boys = \"5%2Ax%2A%28p%2B1%29+=+5%2Ax%2Ap+%2B+5%2Ax\"\r
\n" ); document.write( "\n" ); document.write( "So, total marks scored only by girls = \"6%2Ax%2Ap+-+5%2Ax%2Ap+-+5%2Ax+=+x%2Ap+-+5%2Ax+=+x%2A%28p+-+5%29\"\r
\n" ); document.write( "\n" ); document.write( "Since there are x girls, average score for the girls = total score for girls / number of girls\r
\n" ); document.write( "\n" ); document.write( "= \"x%2A%28p+-+5%29%2Fx+=+p+-+5\"\r
\n" ); document.write( "\n" ); document.write( "Hope you got it :)\r
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